{"uuid": "4bfbe826-a6b7-4f33-8651-4b28d160cc5a", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2025-24359", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/2936", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-24359\n\ud83d\udd39 Description: ASTEVAL is an evaluator of Python expressions and statements. Prior to version 1.0.6, if an attacker can control the input to the `asteval` library, they can bypass asteval's restrictions and execute arbitrary Python code in the context of the application using the library. The vulnerability is rooted in how `asteval` performs handling of `FormattedValue` AST nodes. In particular, the `on_formattedvalue` value uses the dangerous format method of the str class. The code allows an attacker to manipulate the value of the string used in the dangerous call `fmt.format(__fstring__=val)`. This vulnerability can be exploited to access protected attributes by intentionally triggering an `AttributeError` exception. The attacker can then catch the exception and use its `obj` attribute to gain arbitrary access to sensitive or protected object properties. Version 1.0.6 fixes this issue.\n\ud83d\udccf Published: 2025-01-24T16:52:44.304Z\n\ud83d\udccf Modified: 2025-01-24T16:52:44.304Z\n\ud83d\udd17 References:\n1. https://github.com/lmfit/asteval/security/advisories/GHSA-3wwr-3g9f-9gc7\n2. https://github.com/lmfit/asteval/blob/cfb57f0beebe0dc0520a1fbabc35e66060c7ea71/asteval/asteval.py#L507\n3. https://lucumr.pocoo.org/2016/12/29/careful-with-str-format", "creation_timestamp": "2025-01-24T17:04:48.000000Z"}